From a review in The Economist:
The student soldiers, argues the author, were wantonly sacrificed in the military government's final gambit of the war. She reveals that the tokkotai (“special attack force”, which is what the kamikaze are referred to in Japan) had no volunteers when it was formed in October 1944. Instead, new recruits were either assigned by their superiors or forced to sign up using pressure tactics. No senior officer offered his life for this mission; instead the “volunteer” corps comprised newly enlisted boy-soldiers barely of age and student conscripts from the nation's top universities.
That the image of the kamikaze as uniformly bold and fearless survives to this day is not only because of American wartime propaganda, but because of a "myth of the nationalist hero spun by conservative institutions in Japan."